That'll be great! My uncle is a custom officer, I never thought of asking him about importing a classic/vintage to Pakistan. I'll ask him whenever I meet him for sure, get the completely 411 on it.
He told me one time, that a young lady whos father passed away out of country had a '62-'63 Fintail Mercedes-Benz W110 which was the first car he ever bought, she wanted to import it to Pakistan and keep it with her in her fathers native land. When it reach Port Qasim here in Karachi, the custom officers thought that this was a joke and who would want to import such a old car.
At first they said that you can't get the vehicle cleared through the port. But, then the young lady said no and requested to please get her fathers car cleared off of the port, she even started to cry she also stated that she would pay whatever it takes to get the car cleared off of the port.
In the end, the custom officers decided to clear the car off of the port, the young lady winded up paying more than what the car was worth. But atleast she got the car which was in her opinion priceless.